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mylen [45]
3 years ago
11

Please help me solve and explain these two questions:

Mathematics
1 answer:
Rama09 [41]3 years ago
5 0

Answer:

go by basics u will get it easier

Step-by-step explanation:

assume X2 + e3x as some function t

now find derivative you get (1/t )dt/dx

now find dt /dx. simply derivative with respect to x

for second question use formula

dy/dx = - partial derivative of function with x / partial derivative of function with respect to y

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The price of a calculator is 12.50 the sales tax is 7.5 How much will you pay for the calculator
Vikentia [17]
Sales tax = 7.5%

7.5% of 12.50 = (7.5/100) * 12.5 = 0.075* 12.5 = 0.9375

tax = 0.9

Total pay = price + tax = 12.5 + 0.9375 = 13.4375

Total pay ≈ 13.44

Hope this solves it.
3 0
3 years ago
Which of the following values of x satisfy the equation 3x2 - 8x + 4 = 0?
german

Answer:

A

Step-by-step explanation:

3x^2 - 8x + 4 = 0

x= [-b +or- square root (b^2 - 4ac)] ÷ 2a

= [-(-8) +or- square root (-8)^2 - 4(3)(4)] ÷ 2(3)

= [8 +or- square root 16] ÷ 6

= 2 or 2/3

3 0
2 years ago
Determine the standard form of the equation of the line that passes through (-8, -6) and (-4, 9)
Darya [45]

Answer:

15/4 x-y=-24

Step-by-step explanation:

the standard form is ax+by=c

two points (x1,x2) , (y2,y1)

x1=-8       x2=-6

y1=-4        y2=9

find slope m: y2-y1/x2-x1

m=9-(-6)/-4-(-8)

m=15/4

find b: take any point(-8,-6)

y=mx+b

-6=15/4 (-8)+b

-6=-30+b

b=-6+30

b=24

y=15/4 x+24

standard form: y-15/4x=24

OR : 15/4 x-y=-24

8 0
3 years ago
How to show my work doing this
Alex17521 [72]

Answer:

just do it like carry the 1

Step-by-step explanation:

8 0
3 years ago
9x-8>4x+7 solve the linear inequality
allochka39001 [22]
9x-8>4x+7

Move the "x" terms to the right

9x-4x>7+85x>15

Divide both sides by 5:

\frac{5x}{5}>\frac{15}{5}x>3

7 0
1 year ago
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